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Finding the Fourth Proportional to 85,168.68, 127,768.40 and 35,221.64

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Solution

The fourth proportional to 85,168.68, 127,768.40 and 35,221.64 is: 52,838.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,168.68 : 127,768.40 = 35,221.64 : x
  2. Step 2: Convert to fraction form
    85,168.68/127,768.40 = 35,221.64/x
  3. Step 3: Cross multiply
    85,168.68x = 127,768.40 × 35,221.64
  4. Step 4: Simplify right side
    85,168.68x = 4,500,212,588.18
  5. Step 5: Solve for x
    x = 4,500,212,588.18/85,168.68
  6. Step 6: Final answer
    x = 52,838.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.